This article explores the role of political agents, institutions, circumstances, and ideas in the development of public health policies in Britain. The first part attempts to define public health. The second section of the article looks at the experience of the Victorian public health movement. The final part considers the re-emergence of the public health perspective. The underlying theme of the article is that an awareness of the political dimension, both contemporary and historical, improves our understanding of developments in the field of public health. The main conclusions reached are: first, that given the formidable political obstacles which exist, public health reform will only succeed if the reformers themselves operate with full awareness of the political dimension; second, that the modern public health debate is unlikely to be resolved in the short term.